Queen's University’s Post

"Turbulence is ubiquitous in nature. It exists everywhere, from our daily lives to the distant universe, while being labeled as "the last great unsolved problem of classical physics" by Richard Feynman. Prof. Dr. Huirong Yan and her group from the Institute of Physics and Astronomy at the University of Potsdam and DESY have now discovered a long-predicted phenomenon: the weak-to-strong transition in small amplitude space plasma turbulence. The discovery was made by analyzing data from ESA's Cluster mission—a constellation of four spacecraft flying in formation around Earth and investigating how the sun and the Earth interact. The research is published in the journal Nature Astronomy. paper https://lnkd.in/eQ_qMXjH The weak-to-strong transition in Alfvénic turbulence is the most critical, yet observationally unconfirmed, prediction of magnetohydrodynamic (MHD) turbulence theory in the last three decades. It is exceptionally difficult because the three-dimensional sampling of turbulence fluctuations was not available yet. Therefore, the research team developed new multi-spacecraft analysis methods to obtain three-dimensional information on velocity and magnetic field fluctuations, allowing direct comparisons between observations and theory. "The observational confirmation of the weak-to-strong transition solves the last puzzle in MHD turbulence theory: It proves that the turbulence self-organizes from linear 2D wave-like fluctuations to strong 3D turbulence during the energy cascade (i.e., energy transfer across scales) with increasing nonlinearity, regardless of the initial level of disturbances, highlighting the universality of strong MHD turbulence," says Huirong Yan, professor for plasma astrophysics at the University of Potsdam and leading scientist at DESY. As a result, those findings substantially deepen our knowledge of ubiquitous turbulence, and their implications extend beyond the study of turbulence itself to particle transport and acceleration, magnetic reconnection, star formation, and all other relevant physical processes from our Earth to the remote universe." Provided by University of Potsdam  https://lnkd.in/eiDHeeJj

Eclipses past and present aren’t just opportunities for incredible sights. Generations of researchers have used them to study phenomena ranging from the sun itself to the fabric of the universe. UW News interviewed Emily Levesque, associate professor of astronomy, about what scientists past and present have learned by studying eclipses. "In a total solar eclipse, the sun is being perfectly covered by the moon," said Levesque. "That allows us to see and measure things that are normally blocked by the incredibly bright surface of the sun. Once you remove that intense light, a lot of great observations are possible." Learn more: https://lnkd.in/gD8dSrCi #UWArtSci #Eclipse2024

Victor D. Krasnov has #published the #manuscript in our #journal, Advances in Theoretical & Computational Physics Title: Laws of Astronomy after I. Kepler and I. Newton Citation: Krasnov, V. D. (2024). Laws of Astronomy after I. Kepler and I. Newton. Adv Theo Comp Phy, 7(2), 01- 15. Read the #article at https://bit.ly/3wALFne #Ecliptic, #Astronomy, #Declination, #Galaxy

"Quṭb al-Dīn Shīrāzī (d. 1311 CE) completed his astronomical text Ikhtiyārāt-i muẓaffarī in 1282 CE. A richly detailed work composed in Persian, the Ikhtiyārāt covers much of the material appearing in his Arabic text Nihāyat al-idrāk fī dirāyat al-aflāk (completed in 1281 CE.). Intriguingly, Shīrāzī did include in the Ikhtiyārāt material that is missing from its companion. One such passage treats the concept of the prosneusis point as defined for the Ptolemaic lunar model in the Almagest. An examination of Shīrāzī’s discussion of the prosneusis point, both in comparison to related discussions on the physics of planetary orbs, and in the context of Shīrāzī’s more general cosmological discussions in other parts of the Ikhtiyārāt, offers a window to Shīrāzī’s approach to theoretical astronomy, while highlighting, as well, his approach to the authoring of technical texts for astronomy students." https://lnkd.in/dCuc6pPR

Breaking: Indigenous astronomy front-and-centre to new astrophysics research! The year will start with a world-first as the Transients Down Under astrophysics conference, to be held at Swinburne University of Technology later this month, will kick-off with a session on cultural astronomy, featuring Aboriginal elders and graduate students, and the world's leading scholars in cultural astronomy. This will place Indigenous astronomy at the forefront of a new major international research collaboration in astrophysics. Focusing on transient astronomical phenomena, which are described in Indigenous astronomical traditions (such as supernovae and variable stars), the collaboration will enable the astrophysics community to support Indigenous students and researchers, communities, and public education, while Indigenous Knowledge is able to inform astrophysics research. The session will feature myself (University of Melbourne), Yuwaalaraay elder Professor Uncle Ghillar Michael Anderson (University of Southern Queensland), Professor Jarita Holbrook (The University of Edinburgh), Yuwaalaraay PhD candidate Peter Swanton (The Australian National University), and Professor Matthew Bailes (Swinburne University of Technology). The session on cultural astronomy is sponsored by the Australian Association for Astronomy in Culture, Inc. and the Laby Foundation. https://lnkd.in/gBtDdF6Y #indigenous #astronomy #astrophysics #space #indigenousknowledge #aboriginalaustralia #aboriginal #indigenouspeoples #indigenousculture #culturalastronomy #historyofscience #archaeoastronomy #ethnoastronomy #historicalastronomy #melbourne #research #australia

🌟 We are excited to announce a distinguished figures in science and technology! 🌟 Today, we proudly spotlight Hugh Frank Newall, an eminent astronomer whose pioneering work expanded our understanding of the cosmos. 🌌👏 Huge applause to our talented AIML student, Aditya Verma, for creating today's exceptional poster that beautifully encapsulates Newall's remarkable contributions. 🎨✨ Hugh Frank Newall: The Visionary Astronomer 🌌 Achievements in Astronomy: Hugh Frank Newall is renowned for his significant contributions to the field of astronomy. His work with large telescopes and his innovative spectroscopic studies have greatly enhanced our understanding of stellar and solar phenomena. 🔭 From Observations to Discoveries: Newall's dedication to astronomical observation led to advancements in our knowledge of the sun's spectrum and the behavior of stars. His research was instrumental in developing new techniques for studying celestial objects. 📝 Legacy and Honors: Newall's impactful work in astronomy earned him a lasting legacy among the scientific community. His contributions to the design and use of large telescopes have paved the way for modern astronomical research and discoveries. 🌟 Inspiration for Future Generations: Newall's passion for exploring the universe and his innovative approach to observing the stars continue to inspire astronomers and scientists. His legacy lives on in the ever-expanding field of astronomy, encouraging new generations to reach for the stars. Join us as we continue to honor the innovators who are shaping our future. 🚀🌍 #IEEE #AryabhattaClub #Science #Innovation #Astronomy #HughFrankNewall #PioneersInScience #StellarResearch #Spectroscopy #CelestialExploration #ScientificDiscovery #SpaceScience #LegacyOfExcellence #Inspiration #FutureScientists #TechLeaders #STEM #Astrophysics

This was what I had really wanted to do... At Oxford, I was in and out of theoretical physics lectures... No, I never warmed up to this experimental (in a small normal laboratory) side of physics.. My maths was okay.. 🙃 but didn't think it was strong enough for going after antimatter or the string theory like that... Life Sciences, in comparison, doesn't require any maths at all.. 🥰 just some very basic maths can do.. And there are bits I absolutely hated about biology... So there was a narrow area within biology that I was happy to go into... A part of me always yearns for cosmology, atom-splitting, and ... but given the stupidity of my maths, I settled for ... just as I always look to music, early music before Mozart or Beethoven... Maybe, I should have been born centuries earlier at the time of ... I do think I have a very ancient soul living in me.. People don't love, like I do... But if you read a history book, there were some nobilities who would endure and love, like I do now... What I value is not what's appreciated on LinkedIn or the BBC for what they consider to be a success... I don't know why God has given me so much, when God trains me not to use them, even as I get tempted... Always being seen less and all this training to discipline my natural abilities and capacities.. Why did God give me such a wild spirit in the first place inside an obedient idiotically naive childlike heart? Then, He trains me to contain it like I am induced to sleep inside... I don't understand God at all.. I love God.. but just what's the point for having given me such blessings and gifts seemingly a bit too much for one person and endlessly demanding me not to use them... 😇 But I know God always wins over me... He won't let me do any otherwise... I was able to do things as I fancied but His grip is too tight on me... He does it so sweet, which is crazy 🥰 and sometimes I give in like maybe I am meant to live like an idiot, how I live now.. 😇 It doesn't use 1% of my brain to live this life and I turn a blind eye to all the things God has given me, which I can bring back like nothing... But not my way.. If God wants, I live an idiot's life till heaven..God can use anyone else or other people to do what I thought I was gonna do for His Kingdom here on earth... Perhaps, I am meant to be kept in private for .... One thing I know of this God is that He doesn't waste anything.. So I haven't got a clue what's going on or why God loves me this much - isn't that wasteful? .. Gonna eat the chocolates 🙃 okay. Bye. 🦋🦋

Insights into dark matter's 'coldness' open new cosmic frontiers! In the most recent study investigating dark matter led by Vid Irsic, Senior Kavli Fellow at Cavendish Laboratory, vital clues have been gathered about the ‘coldness’ of the mysterious component making up 80% of all matter. The research reveals a deep connection between dark matter and the formation of galaxies in the early Universe. https://buff.ly/49ttu0q Image: The 96 million light years slices through our computer simulations of the Universe showing the gas density distribution for different dark matter models including a “cold” dark matter model (CDM; top left), and several “warm” dark matter (WDM) models varying the particle mass from 4 to 2 keV. The lower the WDM particle mass the smoother the gas density in the simulations. The results are shown at a time when the Universe had an age of 1.4 billion years, roughly 10 % its current age. | Credit: Vid Irsic. @Institute of Astronomy, Cambridge

The Registration for the Preliminary Olympiad for Natural Science along with Physics & Astronomy Olympiad have already started. Register Now for the 6 edition of the Global Copernicus Olympiad and let your child take the first steps towards Global Competition. #physicsolympiad #physicsandastronomyolympiad #astronomyolympiad #naturalsciencesolympiad #naturalscienceolympiad #internationalscienceolympiads #internatinalolympiad #globalolympiad #CopernicusOlympiad